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-rw-r--r--tests/untried/neg/t2031.check6
1 files changed, 6 insertions, 0 deletions
diff --git a/tests/untried/neg/t2031.check b/tests/untried/neg/t2031.check
new file mode 100644
index 000000000..74aa6c9c0
--- /dev/null
+++ b/tests/untried/neg/t2031.check
@@ -0,0 +1,6 @@
+t2031.scala:8: error: polymorphic expression cannot be instantiated to expected type;
+ found : [A]scala.collection.mutable.Builder[A,scala.collection.immutable.TreeSet[A]]
+ required: scala.collection.generic.CanBuildFrom[scala.collection.immutable.TreeSet[Int],Int,?]
+ res0.map(x => x)(TreeSet.newBuilder)
+ ^
+one error found